Use a direct include of strings headers in chrome/browser/chromeos/.

chrome/browser/chromeos/login/managed/locally_managed_user_creation_controller.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_MANAGED_LOCALLY_MANAGED_USER_CREATION_CONTROLLER_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_MANAGED_LOCALLY_MANAGED_USER_CREATION_CONTROLLER_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
-#include "base/string16.h"
+#include "base/strings/string16.h"
 #include "base/timer.h"
 #include "chrome/browser/chromeos/login/managed/managed_user_authenticator.h"
 #include "chrome/browser/managed_mode/managed_user_registration_service.h"
 
 class Profile;
 
 namespace chromeos {
 
 // LocallyManagedUserCreationController is used to locally managed user
 // creation.
@@ skipping 96 matching lines @@
 
   // Factory of callbacks.
   base::WeakPtrFactory<LocallyManagedUserCreationController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(LocallyManagedUserCreationController);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_MANAGED_LOCALLY_MANAGED_USER_CREATION_CONTROLLER_H_